Triceratops was one of the most common dinosaurs at the end of
the Cretaceous Period. Its most prominent features are on its head: two
long brow horns, a nasal horn, and a bony frill. Its frill had no
holes, but it did have a row of conical bones around the edge. Fossil
evidence supports the idea that this head armor was used in display and
ritualized combat within its on species. It may have also served to
deter predators.

Triceratops had powerful jaws and teeth that were elongated blades, suitable for shearing tough vegetation.

Triceratops is the official state dinosaur of Wyoming. Wyoming is the only state that has both a state dinosaur and a state fossil (Knightia, a fish).